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Documentation / devicetree / bindings / gpio / gpio_atmel.txt




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Based on kernel version 4.13.3. Page generated on 2017-09-23 13:55 EST.

1	* Atmel GPIO controller (PIO)
2	
3	Required properties:
4	- compatible: "atmel,<chip>-gpio", where <chip> is at91rm9200 or at91sam9x5.
5	- reg: Should contain GPIO controller registers location and length
6	- interrupts: Should be the port interrupt shared by all the pins.
7	- #gpio-cells: Should be two.  The first cell is the pin number and
8	  the second cell is used to specify optional parameters to declare if the GPIO
9	  is active high or low. See gpio.txt.
10	- gpio-controller: Marks the device node as a GPIO controller.
11	- interrupt-controller: Marks the device node as an interrupt controller.
12	- #interrupt-cells: Should be two. The first cell is the pin number and the
13	  second cell is used to specify irq type flags, see the two cell description
14	  in interrupt-controller/interrupts.txt for details.
15	
16	optional properties:
17	- #gpio-lines: Number of gpio if absent 32.
18	
19	
20	Example:
21		pioA: gpio@fffff200 {
22			compatible = "atmel,at91rm9200-gpio";
23			reg = <0xfffff200 0x100>;
24			interrupts = <2 4>;
25			#gpio-cells = <2>;
26			gpio-controller;
27			#gpio-lines = <19>;
28			interrupt-controller;
29			#interrupt-cells = <2>;
30		};
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